Nanomaterials 2017, 7, 1; doi:10.3390/nano7010001 S1 of S2 Supplementary Materials: Improving Powder Magnetic Core Properties via Application of Thin, Insulating Silica‐Nanosheet Layers on Iron Powder Particles Toshitaka Ishizaki, Hideyuki Nakano, Shin Tajima and Naoko Takahashi Magnetic flux density (T)
2
1
Coating times
1 times
0
3 times
5 times
‐1
‐2
-10000
-5000
0
5000
Magnetic field (A/m)
10000
Figure S1. Magnetic hysteresis curves of the annealed toroidal cores fabricated from uncoated iron powder particles after coating one, three, and five times with colloidal silica. Magnetic flux density (T)
2
1
Coating times
1 times
0
3 times
5 times
‐1
‐2
-10000
-5000
0
5000
Magnetic field (A/m)
10000
Figure S2. Magnetic hysteresis curves of the annealed toroidal cores fabricated from iron powder particles with Sr‐B‐P‐O insulating layers after coating with one, three, and five times with colloidal silica. Nanomaterials 2017, 7, 1; doi:10.3390/nano7010001 S2 of S2 Magnetic flux density (T)
2
Coating layer
1
Sr‐B‐P‐O
0
Sr‐B‐P‐O +
Colloidal silica
Sr‐B‐P‐O + Silica
nanosheet
‐1
‐2
-10000
-5000
0
5000
Magnetic field (A/m)
10000
Figure S3. Magnetic hysteresis curves of annealed toroidal cores fabricated from iron powder particles with only Sr‐B‐P‐O insulating layers, and those with colloidal silica and silica nanosheets coated five times over the Sr‐B‐P‐O insulating layers. © 2016 by the authors. Submitted for possible open access publication under the terms and conditions of the Creative Commons Attribution (CC‐BY) license (http://creativecommons.org/licenses/by/4.0/).